Saad bin Abu Waqqas reported,

The Messenger of Allah ﷺ gave gifts to a group of men while Saad was sitting there. The Messenger of Allah ﷺ left out one man whom I considered the most impressive of them.I said, "Messenger of Allah, why have you overlooked so-and-so? By Allah, I truly see him as a believer."He replied, "Or a Muslim?"I remained silent for a moment, but then what I knew of the man overcame me, and I repeated my words. I said, "Why have you overlooked so-and-so? By Allah, I truly see him as a believer."He replied, "Or a Muslim?"Then what I knew of the man overcame me again, and I repeated my words, and the Messenger of Allah ﷺ repeated his. Then he said, "Saad, I sometimes give to a man while another, whom I have not given to, is dearer to me than him, out of fear that Allah might cast him face-down into the Fire."

Azami 13372

Sahih

عن سعد بن أبي وقاص

أن رسول الله ﷺ أعطى رهطا، وسعد جالس، فترك رسول الله ﷺ رجلا، هو أعجبهم إلي، فقلت: يا رسول الله، ما لك عن فلان فوالله إني لأراه مؤمنا؟ فقال: أو مسلما؟ فسكت قليلا، ثم غلبني ما أعلم منه، فعدت لمقالتي، فقلت: ما لك عن فلان، فوالله إني لأراه مؤمنا؟ فقال: أو مسلما؟ ثم غلبني ما أعلم منه، فعدت لمقالتي، وعاد رسول الله ﷺ، ثم قال: يا سعد، إني لأعطي الرجل وغيره أحب إلي منه، خشية أن يكبه الله في النار.

الأعظمي 13372صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Tafsir of the great Quran
Chapter
Tafsir of Surah Hujurat
Section
His saying, "The Bedouins said, 'We believe.' Say, 'You have not believed, but say, "We have submitted," for faith has not yet entered your hearts. And if you obey Allah and His Messenger, He will not deprive you of your deeds of anything. Indeed, Allah is Forgiving, Merciful.'"
Numbering
Jami al-Kamil 13372 (2nd edition)
Azami 13372